jueves, 27 de agosto de 2015

. Protein within the head of the sperm forms spiky filaments
. Team calculate the shape of the protein with 'sonar-like' process
Researchers have made a groundbreaking discovery that explains how eggs are fertilised.
A 14 year study concluded that sperm harpoon the egg to facilitate fertilization.
Researchers found a protein within the head of the sperm forms spiky filaments, suggesting that these tiny filaments may lash together the sperm and its target.
- 'This finding has really captured our imagination,' said University of Virginia School of Medicine's researcher John Herr.
It represents a significant step forward in what happens during fertilization.
'One of the major proteins that is abundant in the acrosome [in the arterior region of the sperm head] is crystallizing into filaments,' said Herr.
'We now postulate they're involved in penetrating the egg - that's the new hypothesis emerging from the finding, which leads to a whole new set of questions and new hypotheses about the very fine structure of molecular events during fertilization.' Source

martes, 25 de agosto de 2015

SHANGHAI: Chinese stocks tumbled again on Tuesday, despite a rebound in markets elsewhere in Asia.
Major Chinese stock indexes nosedived more than 7 percent, hitting their lowest levels since December, following their more than 8 percent plunge on Monday that sent shockwaves through global financial markets.
- Japan's Nikkei slumped 4 percent on Tuesday, but the rest of Asia was been calmer overall. Europe also started on a firmer footing after Monday's global beating had wiped around $520.70 billion off the value of its leading stock markets.
- The pan-European FTSEurofirst 300 index clawed back 1.7 percent of the more than 5 percent it had lost as London, Paris and Frankfurt bounced 1.5-1.7 percent.
- China, one of the main engines of the world economy, has overtaken Greece at the top of the worry list of global investors, who fret its economy is growing at a much slower pace than the official 7 percent target for 2015. Source

lunes, 24 de agosto de 2015

Hamilton ties Ayrton Senna on 80 podium finishes, fourth on the all-time list behind Alonso (97), Prost (106) and Schumacher (155)
Lewis Hamilton said it was "way too early" to start thinking about winning the world title following his sixth victory in 11 races this season.
The Mercedes driver dominated Sunday's Belgian Grand Prix to move 28 points clear of team-mate Nico Rosberg.
- Hamilton is more than a win ahead of the German with eight races remaining.
"To come away from the best holiday I have ever had and win was fantastic. To translate pole positions into wins is what I want to do," Hamilton said.
"I felt good when I woke up today. I am the strongest and happiest I've ever been in my life. I love my job - it's the greatest job in the world."
Hamilton has scored 10 pole positions in 11 races so far this season, but before Belgium had converted only five of his nine into victories. Source

sábado, 22 de agosto de 2015

Thousands of people showed up to hear Republican presidential frontrunner Donald Trump speak at an Alabama rally Friday, in which the business tycoon vowed, "we're going to make America better than it's ever been."
- The crowd filled about half of the 43,000-seat Ladd-Peebles Stadium in Mobile. It was a hot night, and humid. Trump looked upwards and joked: "If it rains, I'll take off my hat and I'll prove, I'll prove, I'll prove once and for all, that it's mine," while stroking his hair.
- Trump repeated his tough stance on immigration, vowing "we're going to build a wall," and saying Congress could end the guarantee of being granted citizenship upon being born within the U.S.
- "The 14th Amendment I was right on it. You can do something with it, and you can do something fast," Trump said. "In the case of other countries, including Mexico, they don't do that. It doesn't work that way... We're the only place just about that's stupid enough to do it," he said. Source

viernes, 21 de agosto de 2015

She broke down in tears when she performed an emotional track on stage on Wednesday.
But newly-single Perrie Edwards put on a brave face the following morning as she made a radio appearance in New York City with her Little Mix bandmates Leigh-Anne Pinnock, 23, Jade Thirlwall, 22, and Jesy Nelson, 24.
Positively grinning as she headed inside the Elvis Duran and the Morning Show, the 22-year-old pop princess brushed her heartbreak to one side and couldn't have looked happier as she chatted to her waiting fans.
- The singer appeared to be back to her normal self as she showed off her slim physique in a sleeveless, patterned maxi dress, which showed off her alabaster skin to perfection. Source

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